I'm not afraid somebody's gonna get me but I do see in the news often enough that there are home invasions happening pretty frequently so I don't think it would hurt to be prepared to have equal footing or the upper hand if such a thing did occur.
I also know that a few months ago, on the street corner not fifty feet from my front door, one man was beating the crap out of another man who was already down on the ground and all I was able to do was tell my kids to call 911 and go outside and yell at him to stop, hoping he didn't have a gun with which he could make my kids into orphans. Fortunately he did stop, but by the time the cops arrived the beater had run and the beaten managed to get up and stagger off to who knows where. That's what calling 911 gets you, time enough for the bad guy to run and the other guy to wander off and maybe die before he can be found. And if the guy hadn't stopped when I yelled out? I should have had my 22 rifle out to fire a shot into the dirt at my feet to make him think twice and pop one into him if that didn't stop him.